Mobile terminal device, wireless communication unit, wireless communication system, and wireless communication method
First Claim
1. A mobile terminal apparatus configured to perform wireless authentication by transmitting and receiving radio signals to and from a wireless communication unit, the mobile terminal apparatus comprising:
- a determining section, of a processor of the mobile terminal apparatus, configured to determine a carrier sensing pattern for receiving, via an antenna, an authentication response from the wireless communication unit, according to a timing to transmit authentication responses to the wireless communication unit, and to determine how many times carrier sensing is performed according to a total number of currently authenticated mobile terminal apparatuses which is added to the authentication response; and
a carrier sensing section, of the processor, configured to perform the carrier sensing according to the determined carrier sensing pattern.
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Accused Products
Abstract
A mobile terminal device, a wireless communication unit, a wireless communication system, and a wireless communication method by which 1:N communication can be realized at low power consumption and a CH occupation time can be shortened. After each terminal transmits an authorization request, it performs a carrier sense with the pattern corresponding to the transmission timing and waits for authorization response from a key unit (200). The key unit (200) transmits the authorization response at the timing when the carrier sense timings of a plurality of terminals which are authenticated in response to the authorization request from the terminal are coincident with each other. Accordingly, the key unit (200) performs transmission only to the authenticated terminals at one time, and 1:N communication can be realized at low power consumption.
17 Citations
17 Claims
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1. A mobile terminal apparatus configured to perform wireless authentication by transmitting and receiving radio signals to and from a wireless communication unit, the mobile terminal apparatus comprising:
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a determining section, of a processor of the mobile terminal apparatus, configured to determine a carrier sensing pattern for receiving, via an antenna, an authentication response from the wireless communication unit, according to a timing to transmit authentication responses to the wireless communication unit, and to determine how many times carrier sensing is performed according to a total number of currently authenticated mobile terminal apparatuses which is added to the authentication response; and a carrier sensing section, of the processor, configured to perform the carrier sensing according to the determined carrier sensing pattern. - View Dependent Claims (2, 3, 13)
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4. A wireless communication unit configured to perform wireless communication with a plurality of mobile terminal apparatuses, the wireless communication unit comprising:
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a wireless authentication controlling section, of a processor of the wireless communication unit, configured to perform wireless authentication by transmitting and receiving radio signals to and from the plurality of mobile terminal apparatuses; and a transmission timing controlling section, of the processor, configured to cross-check authentication requests from the plurality of mobile terminal apparatuses and to transmit an authentication response at a transmission timing such that only mobile terminal apparatuses that are successfully authenticated receive the authentication response successfully, and to transmit a total number of mobile terminal apparatuses that are currently authenticated by the wireless communication unit, via the authentication response. - View Dependent Claims (5, 6, 7, 8, 14, 15, 16, 17)
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9. A wireless communication system that is formed with a wireless communication unit and a plurality of mobile terminal apparatuses configured to perform wireless authentication by transmitting and receiving radio signals to and from the wireless communication unit, wherein:
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the plurality of mobile terminal apparatuses each comprise; a determining section, of a processor of each of the mobile terminal apparatuses, configured to determine a carrier sensing pattern for receiving, via an antenna, authentication responses from the wireless communication unit, according to a timing to transmit an authentication response to the wireless communication unit, and to determine how many times carrier sensing is performed according to a total number of currently authenticated mobile terminal apparatuses which is added to the authentication response; and a carrier sensing section, of the processor of each of the mobile terminal apparatuses, configured to perform the carrier sensing according to the determined carrier sensing pattern; and the wireless communication unit comprises; a wireless authentication controlling section, of a processor of the wireless communication unit, configured to perform wireless authentication by transmitting and receiving radio signals to and from the plurality of mobile terminal apparatuses; and a transmission timing controlling section, of the processor of the wireless communication unit, configured to cross-check authentication requests from the plurality of mobile terminal apparatuses and to transmit the authentication response at a transmission timing such that only mobile terminal apparatuses that are successfully authenticated receive the authentication response successfully, and to transmit a total number of mobile terminal apparatuses that are currently authenticated by the wireless communication unit, via the authentication response.
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10. A mobile communication method comprising the steps of:
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performing, at a processor of a mobile terminal apparatus, wireless authentication by transmitting and receiving radio signals to and from a wireless communication unit; determining, at the processor, a carrier sensing pattern for receiving an authentication response from the wireless communication unit, according to a timing to transmit authentication responses to the wireless communication unit, and determining how many times carrier sensing is performed according to a total number of currently authenticated mobile terminal apparatuses which is added to the authentication response; and performing, at the processor, the carrier sensing according to the determined carrier sensing pattern.
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11. A wireless communication method comprising the steps of:
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performing, at a processor of a wireless communication unit, wireless authentication by transmitting and receiving radio signals to and from a plurality of mobile terminal apparatuses; and cross-checking, at the processor, authentication requests from the plurality of mobile terminal apparatuses and transmitting an authentication response at a transmission timing such that only mobile terminal apparatuses that are successfully authenticated receive the authentication response successfully, and transmitting a total number of mobile terminal apparatuses that are currently authenticated by the wireless communication unit, via the authentication response.
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12. A wireless communication method in a wireless communication system formed with a plurality of mobile terminal apparatuses that perform wireless authentication by transmitting and receiving radio signals to and from a wireless communication unit, wherein
at least one of the plurality of the mobile terminal apparatuses executes the steps of: -
determining, at a processor of the at least one of the plurality of mobile terminal apparatuses, a carrier sensing pattern for receiving an authentication response from the wireless communication unit, according to a timing to transmit authentication responses to the wireless communication unit, and determining how many times carrier sensing is performed according to a total number of currently authenticated mobile terminal apparatuses which is added to the authentication response; and performing, at the processor of the at least one of the plurality of mobile terminal apparatuses, the carrier sensing according to the determined carrier sensing pattern; and the wireless communication unit executes the steps of; performing, at a processor of the wireless communication unit, wireless authentication by transmitting and receiving radio signals to and from the plurality of mobile terminal apparatuses; and cross-checking, at the processor of the wireless communication unit, authentication requests from the plurality of mobile terminal apparatuses and transmitting an authentication response at a transmission timing such that only mobile terminal apparatuses that are successfully authenticated receive the authentication response successfully, and transmitting a total number of mobile terminal apparatuses that are currently authenticated by the wireless communication unit, via the authentication response.
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Specification